320344405310220 has 48 divisors (see below), whose sum is σ = 949726942805088. Its totient is φ = 80400164469760.

The previous prime is 320344405310219. The next prime is 320344405310329. The reversal of 320344405310220 is 22013504443023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157031570211 + ... + 157031572250.

It is an arithmetic number, because the mean of its divisors is an integer number (19785977975106).

Almost surely, 2^{320344405310220} is an apocalyptic number.

320344405310220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320344405310220 is an abundant number, since it is smaller than the sum of its proper divisors (629382537494868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320344405310220 is a wasteful number, since it uses less digits than its factorization.

320344405310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314063142490 (or 314063142488 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 320344405310220 its reverse (22013504443023), we get a palindrome (342357909753243).

The spelling of 320344405310220 in words is "three hundred twenty trillion, three hundred forty-four billion, four hundred five million, three hundred ten thousand, two hundred twenty".